期刊
NANO LETTERS
卷 12, 期 2, 页码 791-795出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl203801h
关键词
Microbial fuel cell; carbon nanotube; nickel silicide; surface-to-volume ratio; power density
类别
资金
- Global Collaborative Research (GCR) of King Abdullah University of Science and Technology
Microbial fuel cells (MFCs) are an environmentally friendly method for water purification and self-sustained electricity generation using microorganisms. Microsized MFCs can also be a useful power source for lab-on-a-chip and similar integrated devices. We fabricated a 1.25 mu L, microsized MFC containing an anode of vertically aligned, forest type multiwalled carbon nanotubes (MWCNTs) with a nickel silicide (NiSi) contact area that produced 197 mA/m(2) of current density and 392 mW/m(3) of power density. The MWCNTs increased the anode surface-to-volume ratio, which improved the ability of the microorganisms to couple and transfer electrons to the anode. The use of nickel silicide also helped to boost the output current by providing a low resistance contact area to more efficiently shuttle electrons from the anode out of the device.
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